Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 127, Issue -, Pages 631-636Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2018.06.082
Keywords
Non-equilibrium thermodynamics; Guyer-Krumhansl equation; Laser flash experiment
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Funding
- National Research, Development and Innovation Office - NKFIH [NKFIH 124366, NKFIH 124508]
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The existence of non-Fourier heat conduction is known for a long time in small and low temperature systems. The deviation from Fourier's law has been found at room temperature in heterogeneous materials like rocks and metal foams (Both et al., 2016; Van et al., 2017). These experiments emphasized that the so-called Guyer-Krumhansl equation is adequate for modeling complex materials. In this paper an analytic solution of Guyer-Krumhansl equation is presented considering boundary conditions from laser flash experiment. The solutions are validated with the help of a numerical code (Kovacs et al., 2015) developed for generalized heat equations. (C) 2018 Elsevier Ltd. All rights reserved.
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